Skimming device for cream-separators.



REGAUBERT.

APPLICATION '1 11111111111111 9.

1,050,820, Patented Jan. 21, 1913.

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APPLICATION FILED MAR.15, 1909.

Patented Jan. 21, 1913.

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1?. EGAUBERT. I SKIMMING DEVICE FOR 011mm SEPARATORS.

APPLIOATION FILED MAR. 15, 1909.

Patented Jan.21, 1913.

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' 8 me Wfloz Hederic Elm/barf 3513/ 5' auto M421 5 UNITED STATES PATENTOFFICE.

FREDERIC ECAUBERT, OF NEW YORK, N. Y.

SKIMMING DEVICE FOR CREAM-SEPARATORS.

To all whom it may concern:

7 Be it known that I, FREDERIG EOAUBERT, a citizen of the United States,residing in the borough of Brooklyn, city of New York, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Skimming Devices for CreamSeparators, of which thefollowing is a specification.

My invention relates to the perforated screens or cylinders havingcorrugated or irregular surfaces used in connection with the rapidlyrevolving retainers or bowls of centrifugal cream separators by the useof which the separating process is accelerated, and a line of positivedemarcation created and maintained between the cream and blue milk aseach approaches the discharge region, and, more particularly to theconformation of the surfaces comprised in the corrugations and theirrelation to the perforations through which the cream and milk pass inopposite directions during the separating process.

The object of this invention is to effect a complete separation of thecream from the new milk, to separate a larger output of cream from agiven quantity of milk within a limited period of time, to effect alarger separating capacity in connection with a bowl or retainer ofcomparatively small dimensions; thus affording a great saving in timeand power, and to provide a device which may be easily, quickly andthoroughly cleansed.

The invention consists essentially in the skimming element or annularpartition contained within the bowl or retainer of a cream separator,and in the conformation of its surfaces, the arrangement and combinationof parts in relation to the same, all substantially as will behereinafter set forth and particularly claimed.

Referring to the accompanying drawings, in which so much of a creamseparator is shown as is necessary for the illustration of my device,like letters of reference indicate corresponding parts in each of theseveral views or figures.

Figure 1 is a' perspective view of my skimming device showing thedevelopment and arrangement of its peculiar deflecting surfaces. Fig. 2shows an axial or vertical section of my device inposition within thebowl or retainer of a cream separator, also iusection andillustrating-in part the in= Specification of Letters Patent.

Application filed March 15, 1909.

Patented Jan. 21, 1913.

Serial No. 483,539.

terior or reverse configurations of those displayed in Fig. 1. Fig. 3shows a sectional view of my device as above in a horizontal plane asindicated by the line A A, Fig. 2. Fig. at shows the development of thecorrugations in a plane and comprises an en larged part of the exteriorsurface of my device as shown in Fig. 1. Fig. 5 shows an enlargedsection of the walls of my device on the line A, A Fig. 2 and as an arcintermediate radial lines B, C, Fig. 3.

In the drawings, see Fig. 2, 1 indicates an ordinary bowl or retainer ofa cream separator mounted axially on the shaft 2 by which it issupported and rapidly rotated by means of any well known device. Thisretainer is provided with the cover 3 from which the axial feed tube 4extends to the bottom portion where it terminates in the flange 4 whichis held slightly above the bottom by the radial lugs 5 which arepreferably attached to said flange. Openings 6 are provided in theflange 4 for the flow of the milk. A packing ring 7 serves as a seal forthe cover 3. A blue milk exit is provided by the duct 8 which leads fromthe annular channel 7 and a cream exit .in the opening 9 in the cover 3,their arrangement being so that they will discharge in separate annularcollecting recesses usually provided for that purpose from whichdischarge spouts lead to proper receiving receptacles (not shown).Within the retainer 1 and positioned concentrically in proximity to itsinterior cylindrical wall is the corrugated and perforated skimmingdevice 10. This device is separately shown in Fig. 1. It is providedwith the annular centering and driving means 11, consisting of a ring orcollar and the radial lugs 12 which are of such length as to fit withinthe diameter of the retainer, and, while providing an intermediate spacebetween the skimming device and the wall of the retainer for the passageof the blue milk, also serve to keep the same properly centered. In Fig.1 the skimming device 10 is shown in perspective. It consists of a thinmetallic tubular body of a less diameter than the retainer 1 in which itis to be used. The walls of this tube are corrugated or embossed bymeans ofproper dies to convert the surface into a series of corrugationsor protuberances arranged ge-" ometrically over the entire surface asassociated pyramids, which, in their relative 'arrangement andconformation chiefly constl tute the novel features of my device. Thesepyramidal corrugations or protuberances are shown obversely, in partonly, in Fig. 2. The entire interior and exterior surface of the deviceis produced by a geometrically arranged repetition of allied pyramidseach of which constitutes a geometrical unit. This unit consistsprimarily of a pyramidal protuberance or boss; or, preferably of such aprotuberance in the form of a hexagonal pyramid with. its apex extendingexteriorly and with its base reduced in plan to a triangle of suchdimensions as may be inscribed within the normal base of such pyramid.It isnot essential that these pyramids shall be regular, their axes maybe eccentric of their bases without departing from my method ofarrangement or their usefulness. As shown in Figs. 1 and 1 thesepyramids are assembled on their triangular bases and adjoining eachother in a geometrical arrange ment throughout the whole surface of mydevice. In Fig. 4; 12, 13, 14, 15. 16 and 1'7 indicate the angularplanes forming the surface of the preferred hexagonal pyramid having itsapex at 21 and its base within a triangular area bounded by the lines18, 19 and 20. The planes 12 and 13, 1 1 and 15, 16 and'17 are in thesame angular relation to each other as if the pyramid was in facthexagonal at its base, therefore the lines 18, 19 and 20 whichcircumscriloe the triangular base of the pyramid cut it in planesparallel or exteriorly parallel with its axis, and in tersecting at apoint above its normal base the edges 6; of the pyramid which lieintermediate the planes 12 and 13, 14 and 15, and 16 and 17. The generalassembly of these pyramids as geometrical units may be viewed as aseries of horizontal zones with each alternate triangle inverted, or asa pair of adjoining triangles as a subordinate unit having as its base arhomboidal figure, such units combining with each other geometrically toform a series 'of right and left helical bands about the cylinder. Thisarrangement of pyramids having triangular bases in horizontal zones witheach alternate triangle inverted brings their apices in differenthorizontal planes. likewise the perforations 21. thus doubling theireffective field. It will be readily understood that the interior of thisdevice will show a corresponding reverse condition of the exterior owingto its construction with comparatively thin walls. This corrugatedcylinder is provided with two sets of perforations which lie indifferent coaxial cylindrical surfaces which are represented in Fig. 5by dotted lines D. E. Adjacent to the apex of each pyramid is aperforation 21 which as it lies at a greater distance from the axis ofthe cylinder and its retainer provides for the passage of the. heavierelement or blue milk. Atthe intersection of all lines comprising thetriangular boundaries of adjoining pyramids are perforations 22 for thepassage inwardly of the lighter element or of such cream particles asmay chance to go beyond the wall of this device. In developing thesurfaces of my device by these associated pyramids arranged in themanner described, I have secured gathering and deflecting areas whichare at all times in a plane which are either angularly disposed inrelation to the lines of centrifugal action or tangential to rotaryaction, and at the same time directive in deflecting efiect toward aperforation through which the lighter or heavier elements of thematerial to be acted upon should normally pass. This is effected by thefact that all these surfaces are planes which in all instances extendfrom a perforation in a field of major centrifugal pres sure to aperforation in a field of minor cen trifugal pressure, the arrangementbeing such that there is an utter absence of intermediate depressions orpockets which would be likely to retard the free How of the elementsdefinitely toward the proper perforations. In the assembly of the eunits dctinite, trough-like conduits are formed intermediate the same,and as these are bisected by the pyramidal edges (1. shown between theplanes 12 and 13, 1 1 and 15, 16 and 17 at an elevation from the base ofthese pyramids. these conduits direct the flow freely and in allinstances toward theperforations 22 from which they radiate. Thearrangement of these gathering and deflecting surfaces and conduitsintermediate the two sets of per forations is such that no part of thewall of the device lies in a cylindrical surface intermediate suchperforations, the intermediatn surface being in all instances broken byan intervening angle so that there will be no tendency of the fluidelements to wipe by any perforation and by so doing create eddies to andfro through such perforations and interfere with positive separatingaction.

My device may be used in connection with any well known cream separatoror centrifugal machine and its operation is as follows: New milk is fedby a flow regulating device (not shown) downward through the axial tube4. It passes between the bottom of the retainer 1 and the flange 4" andthence upwardly through the perforations 6 into the body of theretainer. Here the separating action is set up by centrifugal forcewhich carries the blue milk outwardly through the perforations 21 to thespace intermediate the skimming device 10 and the inner wall of theretainer 1. Any cream particles which may pass out with it will beintercepted by the pyramidal protuberances or corrugations andagglomerated thereon and will flow inwardly through the perforations 22and thence in proximity to the tube 4 and with the mass of cream riseand be discharged through the opening 9 in the cover. Thus the blue milkin rising between the wall of the retainer and the exterior of my devicewill be thoroughly divested of cream and rising through the tube ortubes 8 be discharged as hereinbefore described.

Having thus described the invention, what I claim as new is 1. In acentrifugal fluid separator, a skimming partition comprising aperforated cylindrical screen the wall of which is corrugated in aseries of hexagonal pyramids.

2. In a centrifugal fluid separator, a skimming partition comprising aperforated cylindrical screen the wall of which is corrugated in aseries of associated hexagonal pyramids having certain of theperforations adjacent the apices of said pyramids and othersintermediate their bases.

In a centrifugal fluid separator, a perforated skimming partitiontherefor bearing gathering protuberances, said protuberances having theform of exteriorly projecting hexagonal pyramids.

4. In a centrifugal fluid separator, a skimming partition comprising aperforated cylindrical screen the wall of which is corrugated into aseries of associated hexagonal pyramids, said pyramids having the planof their bases reduced to a triangle inscribed within the normal basesof said hexa gonal pyramids.

5. In a centrifugal fluid separator, a skimming partition comprising aperforated cylindrical screen the wall of which is corrugated into aseries of associated hexagonal pyramids, said pyramids having the planof their bases reduced to a triangle inscribed within the normal basesof said hexagonal pyramids such pyramids being geometrically assembledalong the lines of said triangular bases.

(5. In a centrifugal fluid separator, a skimming partition comprising acylindrical screen, bearing perforations in different coaxialcylindrical surfaces the wall of which is corrugated into a series ofgeometrically associated hexagonal pyramids having triangular bases, oneset of said perforations lying intermediate said pyramids and at theintersection of the triangular lines within which the bases of saidpyramids are inscribed.

7 In a centrifugal fluid separator, a skimming partition comprising acylindrical screen, bearing perforations in different coaxialcylindrical surfaces having a series of inclined plane surfacesintermediate said perforations, each set of said plane surfacescombining to produce a hexagonal pyramid about an axis adjacent to itscorresponding perforation.

8. In a centrifugal fluid separator, a skimming partition comprising acylindrical screen bearing perforations in different coaxial surfaceshaving the inclined plane surfaces of hexagonal pyramids intermediatesaid perforations, said inclined plane surfaces combining to forminclined conduits terminating in one set of said perforations.

9. In a centrifugal fluid separator, a skimming partition comprising aperforated cylindrical screen the wall of which is corrugated into aseries of associated inclined planes for gathering and deflecting theelements toward their proper perforations, said planes combining toproduce exteriorly projecting hexagonal pyramids.

10. In a centrifugal fluid separator, a skimming partition comprising acylindrical screen bearing perforations in two coaxial surfaces the wallof which is corrugated into a series of hexagonal pyramids havingtriangular bases and the exterior set of said perforations adjacenttheir apices, said pyramids being geometrically assembled incircumferential. bands to bring said exterior perforations comprisedwithin said bands in different horizontal planes.

' FREDERIC ECAUBERT.

IVitn'esses LAURA E. MONK, HARRY E. KNIGHT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

